Multiple Reactions - Johnson Group

L11L11--11 ChE 400- Reactive Process EngineeringChEChE400400--Reactive Process EngineeringReactive Process EngineeringMultiple Reactions We have largely considered single Reactions so far in this class How many industrially important processes involve a single reaction? The job of a chemical engineer is therefore to designL11L11--22 ChE 400- Reactive Process EngineeringChEChE400400--Reactive Process EngineeringReactive Process EngineeringMultiple Reactions We need to develop tools that will allow us to quantify how well (or how poorly) we are doing at producing a desired product There are three concepts that we need to develop for Multiple Reactions : Conversion (similar to single Reactions ) Xj= Selectivity Sj= Yield Yj= L11L11--33 ChE 400- Reactive Process EngineeringChEChE400400--Reactive Process EngineeringReactive Process EngineeringCC22HH2 2 --> 2 > 2 CC(s(s))+ H+ H2 2 (VII) coke formation (explosion!)

L11-3 ChE 400 - Reactive Process Engineering ChE 400-Reactive Process Engineering C 2H 2 -> 2 C (s) + H 2 (VII) coke formation (explosion!) Multiple Reactions So far, we have exclusively looked at simple system with only one reaction occuring.

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